#answer{
    position: fixed;
    top: 64px;
    bottom: 10px;
    width: 100%;
    /*z-index: 1;*/
    overflow-y: scroll;
}
.answer_a{
    width: 60%;
    min-width: 1152px;
    margin: 0 auto;
    height: 120px;
    line-height: 120px;
    font-size: 16px;
    font-weight: 600;
    color: #475266;
}
